James Hansen Quotes

Climate change - for so long an abstract concern for an academic few - is no longer so abstract. Even the Bush administration's Climate Change Science Programme reports 'clear evidence of human influences on the climate system.'

Climate change is sometimes misunderstood as being about changes in the weather. In reality it is about changes in our very way of life.

Climate change is having a dramatic effect on the ground.

The effects of climate change are real and must be acted on.

What I worry about is climate change, because that would have untold effects that we can't even measure yet.

If we do not act to curb climate change immediately, we will leave our children and grandchildren an unrecognizable planetIt is the poor, those least responsible for climate change and least able to afford adaptation, who would suffer the most.

Climate change is real and humans do contribute to those changes.

We are upsetting the atmosphere upon which all life depends. In the late 80s when I began to take climate change seriously, we referred to global warming as a "slowmotion catastrophe" one we expected to kick in perhaps generations later. Instead, the signs of change have accelerated alarmingly.

Climate change is real and it is caused to a significant extent by human activity.

There's one issue that will define the contours of this century more dramatically than any other, and that is the urgent and growing threat of a changing climate.

Humans are too stupid to prevent climate change from radically impacting on our lives over the coming decades.

Our climate is changing. And while the increase in extreme weather we have experienced in New York City and around the world may or may not be the result of it, the risk that it may be - given the devastation it is wreaking - should be enough to compel all elected leaders to take immediate action.

Of course climate change is real.

...climate change is accelerating. It threatens our well being, our security, and our economic development. It will lead to uncontrollable risks and dramatic damage if we do not take resolute countermeasures.

I think we're all experiencing climate change. Experience is an effective teacher. It's sometimes a very harsh teacher. So we will be taught about climate change.

Climate change is a reality.

The record rainfall and storm surges that have brought flooding across the UK are a clear sign that we are already experiencing the impacts of climate change.

All the science in the last few years, or almost all of it, really serves to show that the [climate] effects are larger and more rapid than we had thought even a decade ago.

Every footstep we take, every action has a consequence. We breathe in weather, but we breathe out CO2. We're responsible for weather and for climate.

Listen, global warming is a real problem, but it' s not the end of the world. A 30-centimetre sea level rise is just not going to bring the world to a standstill, just like it didn't over the last 150 years.

Some people call it global warming; some people call it climate change. What is the difference?

We have great international experts within India telling us that the climate is changing, and actions has to be taken, otherwise China and India would be the countries most to suffer from climate change.

Imagine what our planet would look like with an increase in temperature of two degrees or four degrees, given that at 0.8 degrees we already have serious problems in the world.

To be clear, climate change is a true 800 pound gorilla in the room. The effects of global warming threaten global environmental upheaval over the coming century. But for South Florida and the Everglades, it could be our death knell if urgent action is not taken.

Human beings are definitely changing the planet, but how much impact they are having on climate, I don't know and I don't care.